On a recent cloud-filled flight with my husband the pilot, I discovered the concept of spatial orientation. Spatial orientation is the innate ability of any living thing to determine its relative position to the surrounding environment and regulate its body and posture accordingly. In aviation, spatial orientation is crucial, a literal matter of life and death, as pilots must maintain proper positioning of their aircraft to avoid crashing. Humans naturally and easily maintain spatial orientation on the ground; three-dimensional flight is unfamiliar to our bodies, unsuitable for an inflight environment. After all, we are not birds, and our human senses experience conflict in the air, especially in less than ideal…